A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4)
We present a new, open-source viscoelastic solid earth deformation model, Elmer/Earth. Using the multi-physics finite-element package Elmer, a model to compute viscoelastic material deformation has been implemented into the existing linear elasticity solver routine. Unlike approaches often implement...
Published in: | Geoscientific Model Development |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2020
|
Subjects: | |
Online Access: | https://doi.org/10.5194/gmd-13-1155-2020 https://doaj.org/article/023a26bad2ff4370b41d15fc344b04fb |
id |
ftdoajarticles:oai:doaj.org/article:023a26bad2ff4370b41d15fc344b04fb |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:023a26bad2ff4370b41d15fc344b04fb 2023-05-15T16:41:26+02:00 A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4) T. Zwinger G. A. Nield J. Ruokolainen M. A. King 2020-03-01T00:00:00Z https://doi.org/10.5194/gmd-13-1155-2020 https://doaj.org/article/023a26bad2ff4370b41d15fc344b04fb EN eng Copernicus Publications https://www.geosci-model-dev.net/13/1155/2020/gmd-13-1155-2020.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-13-1155-2020 1991-959X 1991-9603 https://doaj.org/article/023a26bad2ff4370b41d15fc344b04fb Geoscientific Model Development, Vol 13, Pp 1155-1164 (2020) Geology QE1-996.5 article 2020 ftdoajarticles https://doi.org/10.5194/gmd-13-1155-2020 2022-12-31T00:57:01Z We present a new, open-source viscoelastic solid earth deformation model, Elmer/Earth. Using the multi-physics finite-element package Elmer, a model to compute viscoelastic material deformation has been implemented into the existing linear elasticity solver routine. Unlike approaches often implemented in engineering codes, our solver accounts for the restoring force of buoyancy within a system of layers with depth-varying density. It does this by directly integrating the solution of the system rather than by applying stress-jump conditions in the form of Winkler foundations on inter-layer boundaries, as is usually needed when solving the minimization problem given by the stress divergence in commercial codes. We benchmarked the new model with results from a commercial finite-element engineering package (ABAQUS, v2018) and another open-source code that uses viscoelastic normal mode theory, TABOO, using a flat-earth setup loaded by a cylindrical disc of 100 km in diameter and 100 m in height at the density of ice. Evaluating the differences in predicted surface deformation at the centre of the load and two distinctive distances (100 and 200 km ), average deviations of 7 and 2.7 cm of Elmer/Earth results to ABAQUS and TABOO, respectively, were observed. In view of more than 100 cm maximum vertical deformation and the different numerical methods and parameters, these are very encouraging results. Elmer is set up as a highly scalable parallel code and distributed under the (L)GPL license, meaning that large-scale computations can be made without any licensing restrictions. Scaling figures presented in this paper show good parallel performance of the new model. Additionally, the high-fidelity ice-sheet code Elmer/Ice utilizes the same source base as Elmer and thereby the new model opens the way to undertaking high-resolution coupled ice-flow–solid-earth deformation simulations, which are required for robust projections of future sea-level rise and glacial isostatic adjustment. Article in Journal/Newspaper Ice Sheet Directory of Open Access Journals: DOAJ Articles Geoscientific Model Development 13 3 1155 1164 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 T. Zwinger G. A. Nield J. Ruokolainen M. A. King A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4) |
topic_facet |
Geology QE1-996.5 |
description |
We present a new, open-source viscoelastic solid earth deformation model, Elmer/Earth. Using the multi-physics finite-element package Elmer, a model to compute viscoelastic material deformation has been implemented into the existing linear elasticity solver routine. Unlike approaches often implemented in engineering codes, our solver accounts for the restoring force of buoyancy within a system of layers with depth-varying density. It does this by directly integrating the solution of the system rather than by applying stress-jump conditions in the form of Winkler foundations on inter-layer boundaries, as is usually needed when solving the minimization problem given by the stress divergence in commercial codes. We benchmarked the new model with results from a commercial finite-element engineering package (ABAQUS, v2018) and another open-source code that uses viscoelastic normal mode theory, TABOO, using a flat-earth setup loaded by a cylindrical disc of 100 km in diameter and 100 m in height at the density of ice. Evaluating the differences in predicted surface deformation at the centre of the load and two distinctive distances (100 and 200 km ), average deviations of 7 and 2.7 cm of Elmer/Earth results to ABAQUS and TABOO, respectively, were observed. In view of more than 100 cm maximum vertical deformation and the different numerical methods and parameters, these are very encouraging results. Elmer is set up as a highly scalable parallel code and distributed under the (L)GPL license, meaning that large-scale computations can be made without any licensing restrictions. Scaling figures presented in this paper show good parallel performance of the new model. Additionally, the high-fidelity ice-sheet code Elmer/Ice utilizes the same source base as Elmer and thereby the new model opens the way to undertaking high-resolution coupled ice-flow–solid-earth deformation simulations, which are required for robust projections of future sea-level rise and glacial isostatic adjustment. |
format |
Article in Journal/Newspaper |
author |
T. Zwinger G. A. Nield J. Ruokolainen M. A. King |
author_facet |
T. Zwinger G. A. Nield J. Ruokolainen M. A. King |
author_sort |
T. Zwinger |
title |
A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4) |
title_short |
A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4) |
title_full |
A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4) |
title_fullStr |
A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4) |
title_full_unstemmed |
A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4) |
title_sort |
new open-source viscoelastic solid earth deformation module implemented in elmer (v8.4) |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/gmd-13-1155-2020 https://doaj.org/article/023a26bad2ff4370b41d15fc344b04fb |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Geoscientific Model Development, Vol 13, Pp 1155-1164 (2020) |
op_relation |
https://www.geosci-model-dev.net/13/1155/2020/gmd-13-1155-2020.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-13-1155-2020 1991-959X 1991-9603 https://doaj.org/article/023a26bad2ff4370b41d15fc344b04fb |
op_doi |
https://doi.org/10.5194/gmd-13-1155-2020 |
container_title |
Geoscientific Model Development |
container_volume |
13 |
container_issue |
3 |
container_start_page |
1155 |
op_container_end_page |
1164 |
_version_ |
1766031860112031744 |